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tests: fuzz: Store initialized permall state blob

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We have to store the permall state blob once it has been initialized since
otherwise some fields are not having proper values in the internal state.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
This commit is contained in:
Stefan Berger 2021-07-22 18:58:19 -04:00 committed by Stefan Berger
parent a6c9836af5
commit e56316617c
1 changed files with 22 additions and 0 deletions
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22
tests/fuzz.cc
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@ -8,6 +8,7 @@
#include <libtpms/tpm_library.h>
#include <libtpms/tpm_error.h>
#include <libtpms/tpm_memory.h>
#include <libtpms/tpm_nvfilename.h>
static void die(const char *msg)
@ -37,11 +38,23 @@ static TPM_RESULT mytpm_io_getphysicalpresence(TPM_BOOL *phyPres,
return TPM_SUCCESS;
}
static unsigned char *permall;
static uint32_t permall_length;
static TPM_RESULT mytpm_nvram_loaddata(unsigned char **data,
uint32_t *length,
uint32_t tpm_number,
const char *name)
{
if (!strcmp(name, TPM_PERMANENT_ALL_NAME)) {
if (permall) {
*data = NULL;
assert(TPM_Malloc(data, permall_length) == TPM_SUCCESS);
memcpy(*data, permall, permall_length);
*length = permall_length;
return TPM_SUCCESS;
}
}
return TPM_RETRY;
}
@ -50,6 +63,13 @@ static TPM_RESULT mytpm_nvram_storedata(const unsigned char *data,
uint32_t tpm_number,
const char *name)
{
if (!strcmp(name, TPM_PERMANENT_ALL_NAME)) {
free(permall);
permall = NULL;
assert(TPM_Malloc(&permall, length) == TPM_SUCCESS);
memcpy(permall, data, length);
permall_length = length;
}
return TPM_SUCCESS;
}
@ -124,6 +144,8 @@ extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
TPM_Free(rbuffer);
TPM_Free(vol_buffer);
TPM_Free(perm_buffer);
TPM_Free(permall);
permall = NULL;
return 0;
}